Cinnarizine EP Impurity C CAS CATO-C4X-13989
| CAS No. | CATO-C4X-13989 |
| Molecular Formula | C35H37N2 |
| Molecular Weight | 485.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Cinnarizine EP Impurity C (CAS CATO-C4X-13989, C35H37N2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, Cinnarizine EP Impurity C is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 485.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C35H37N2 |
| Molecular Weight | 485.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Cinnarizine Standards
- Cinnarizine EP Impurity D (CAS 1415587-79-9)
- Cinnarizine EP Impurity D (CAS 1199751-98-8)
- Cinnarizine EP Impurity E (CAS 216581-01-0)
- Cinnarizine-D8 (CAS 1185242-27-6)
- Cinnarizine Impurity 1 (CAS 16699-20-0)
- Cinnarizine EP Impurity B (CAS 750512-44-8)
- Cinnarizine (CAS 298-57-7)
- Cinnarizine impurity 10 (CAS CATO-C4X-139810)
Recommended Standards
- 6,7-Dichloro-4-(4-chlorophenyl)-2-(4-(trifluoromethoxy)phenyl)phthalazin-1(2H)-one (CAS 161716-24-1)
- Racemic-(4aS,7S,7aR)-4-benzyl-7-(tert-butyldiphenylsilyloxy)hexahydrocyclopenta[b][1,4]oxazin-3(2H)-one (CAS 1422343-94-9)
- N-Debenzyl-N-methyl-O-demethyl-O-(3-dimethylaminopropyl)-BIX 01294 (CAS 1197196-48-7)
- Racemic-(4aS,7R,7aR)-4-benzyl-7-(tert-butyldiphenylsilyloxy)hexahydrocyclopenta[b][1,4]oxazin-3(2H)-one (CAS 1422344-15-7)
- Lornoxicam Impurity 74 (CAS 7148-06-3)
- Dexpanthenol Impurity 19 (CAS 2140-53-6（free base）)
- Dexmedetomidine Impurity 96 (CAS CATO-C4X-123096)
- 4-Amino-N-phenylbenzenesulfonamide (CAS 127-77-5)
- 2-[(E)-2-(4-tert-Butylphenyl)ethenyl]-1-methylpyridin-1-ium iodide (CAS 1025707-61-2)
- 2,4-Dichloro-6,7-difluoroquinazoline (CAS 774212-69-0)
- 2-(Thiophen-2-yl)-1,3-thiazole-5-carboxylic acid (CAS 933760-21-5)
- 1-(1-(Methylsulfonyl)cyclopropyl)ethan-1-one (CAS 2169130-85-0)
- 4-Fluoro-3,3-dimethylpyrrolidine (CAS 1780148-99-3)
- Rac1 Inhibitor F56, control peptide (CAS 1315378-77-8)
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